fallback bridging briefly...

Visibility: Open to anyone

    fallback bridging...

    i suspect that there shouldn't be a mention of this for ccnp certification, since most indications that i'm seeing have it at ccie, even if there...  but the idea is interesting...

     

    this is simple enough... create a bridge group for legacy non-routable protocols to pass between  svi's or l3 interfaces, such as decnet...  (is that even out there anymore?)

     

    dls1(config)#bridge 1 protocol vlan-bridge

    dls1(config)#

     

    that statement turns it on, then configure svi's (int vlan x) into a bridge group, say 1...

     

    dls1(config)#int vlan 10

    dls1(config-if)#bridge-group 1

    dls1(config-if)#end

    dls1#sh bridge

    Br Group    Mac Address       State      Type        Ports

    --------    -----------       -----      ----        -----

       1        0009.b73f.ce87    Forward    DYNAMIC     Vl10 Po1

    dls1#

     

     

    this is very exciting...  chances are you'll never need it nowadays... however, i was alarmed when i read that 3550's might treat ipv6 as a non-routable protocol (read, not ipv4) in older versions of ios...

     

    but no, arteq, you say, this simply cannot be...

     

    dls1#sh ipv6 proto

     

    dls1#

     

     

     

     

    good Lord...

     

    dls1(config)#ipv6 unicast-routing

    dls1(config)#do sh ipv6 proto

    IPv6 Routing Protocol is "connected"

    dls1(config)#

     

    good 3550...

     

    http://insearchofthecert.blogspot.com/